Performs beam search based decoding. Args: encoder_outputs: the outputs of the encoder. num_hyps_per_beam_override: If set to a value <= 0, this parameter is ignored. If set to a value > 0, then this value will be used to override p.num_hyps_per_beam. Returns:
(self, encoder_outputs, num_hyps_per_beam_override=0)
source not stored for this graph (policy: none)